What to do about no-global-event-listener warning for “DOM is ready” function?

You can probably ignore the rule. A (very) quick search revealed the GitHub PR where this rule was added, and it is only intended for use in React components (emphasis mine):

It’s only meant for React components. Not sure if there’s a way to
make it more specific…

Hata!: SQLSTATE[HY000] [1045] Access denied for user 'divattrend_liink'@'localhost' (using password: YES)